mutation

From Longman Dictionary of Contemporary EnglishRelated topics: Biology, Microbes, genetics, biochemmutationmu‧ta‧tion /mjuːˈteɪʃən/ noun [countable, uncountable] 1 HBa change in the genetic structure of an animal or plant that makes it different from others of the same kind2 technical a change in a speech sound, especially a vowel, because of the sound of the one next to itExamples from the Corpusmutation• A second bug experienced a mutation that allowed it to make use of the acetate excreted from the first.• For the last 20 years researchers have been able to calculate genome sizes and mutation rates.• By far the shakiest part of the calculation is the average mutation rate.• Previously, disease-causing mutations have been linked to rare or incurable disorders, providing often debatable benefits to small numbers of people.• A minor mutation should be deemed an eccentricity and nothing more.• Living organisms have a similar tradeoff in deciding how much mutation and innovation is needed to keep up with a changing environment.• If mutagens like cosmic rays are present then all normal mutation rates are boosted.• The other mode depends on occasional small mutations, like the changes in the parameters of protozoa.

单词	mutation
释义	mutation From Longman Dictionary of Contemporary EnglishRelated topics: Biology, Microbes, genetics, biochemmutationmu‧ta‧tion /mjuːˈteɪʃən/ ●○○ noun [countable, uncountable] 1 HBa change in the genetic structure of an animal or plant that makes it different from others of the same kind2 technical a change in a speech sound, especially a vowel, because of the sound of the one next to itExamples from the Corpusmutation• A second bug experienced a mutation that allowed it to make use of the acetate excreted from the first.• For the last 20 years researchers have been able to calculate genome sizes and mutation rates.• By far the shakiest part of the calculation is the average mutation rate.• Previously, disease-causing mutations have been linked to rare or incurable disorders, providing often debatable benefits to small numbers of people.• A minor mutation should be deemed an eccentricity and nothing more.• Living organisms have a similar tradeoff in deciding how much mutation and innovation is needed to keep up with a changing environment.• If mutagens like cosmic rays are present then all normal mutation rates are boosted.• The other mode depends on occasional small mutations, like the changes in the parameters of protozoa.
随便看	pass something to/onto etc pass something ↔ along pass something ↔ around pass something ↔ down pass something ↔ up pass the buck pass the hat around pass the point of no return pass the time of day pass the time of day (with somebody) pass the time of day with pass the word pass through pass to pass to etc pass unnoticed pass unnoticed pass up pass up a chance pass up a chance/opportunity/offer pass up a offer pass up a opportunity pass water pass-along pass-along readers